From the pink bus to new media and gaffes to opinion polls, here is your indispensable guide to the words, thoughts and, not least, promises that will shape the political conversation over the next two months

A home video published on Facebook shows missing teenager Becky Watts eating curry in the kitchen with her father, Darren Galsworthy. She was last seen at her home in the St George area of Bristol on the morning of 19 February. Police have arrested two people in connection with her disappearance